The two girls packed up their things, went to Liang Yuan's room with a stack of documents, and found someone to go upstairs for a meeting together.

After the two girls entered the room, they found that someone was holding their short hair, lying on the writing desk in the room, looking like the whole person had been hollowed out.

Since before participating in the Youth Science Competition, Liang Yuan spent a week finally finishing Li Yuanling's more than 500 pages of technical documents, although he still doesn't understand the technology at all, but Liang Yuan knows what this document is about.

To sum it simply, this document can be condensed into three words, money! money!

Although Liang Yuan is open, someone is not a practitioner in a related industry after all, and some of the technical terms used in the industry are completely different from those used in popular science for the public.

For example, aviation enthusiasts who often make airplanes can almost know the new generation of clean power gear engine (GTF) developed by Pratt & Whitney.

If you go overseas to find relevant technology in the 90s, sorry, it doesn't exist, and Pratt & Whitney, a new technology that will be a key bet in the field of turbofan engines in the future, was not applied to turbofan engines at all in the early 90s.

However, there is a multi-gear transmission technology on the turboshaft engine, which is the originator of turbofan gear transmission technology, and the multi-gear transmission technology is currently only used in the gem-level turboshaft engine, if it is changed to the turbofan, it is a gadget with a thrust of about 10,000 N, which is almost equivalent to the power system of the super-large model aircraft, and it cannot enter the eyes of the first-line power manufacturers at all.

In fact, it was not until 1995 that the first introduction of gear transmission technology into the design and manufacture of small turbofan engines was introduced to the design and manufacture of small turbofan engines.

What Liang Yuan didn't expect was that the first advocate who planned to apply gear transmission technology to the field of turbofan engines was Snekma, who currently planned to cooperate with Brilliance Power.

Generally speaking, the leading giants in the market are stable and conservative, and rarely aggressively adopt new technologies that have never been proven at risk when iterating on products.

As a rising star, Snecma had to find a new way in the field of technology if he could break through the high barriers erected by the power triumvirate.

Without Liang Yuan's appearance, the French would have been looking for a research and development partner for a 10-ton large-ducted turbofan engine from the 90s to 20 years later.

The M123 (Note 1) medium-thrust turbofan engine, which was the first to propose gearing technology, was still on the drawing board until the 10s of the new century, when Pratt & Whitney's next-generation clean power gear aero engine (GTF) had begun to fly around the world.

Strictly speaking, Snecma was able to propose the use of gear transmission technology in the M123 turbofan for the first time, and it has its own reasonable technical logic background.

In principle, Pratt & Whitney's gear transmission and Rolls-Royce's three-rotor are actually the same thing, both of which coordinate the number of revolutions of the intake fan and the high-pressure compressor, so that both can work in the optimal efficiency range, so as to optimize the intake efficiency of the turbofan engine, improve the surge margin of the engine, and then obtain the effect of fuel saving and thrust.

In the seventies, some engineers considered introducing gear transmission into the design and manufacture of aero engines, and the problem was that no gear in that era could withstand the tens of tons of stress generated by turbofan engines running at full power under the condition of rubbing against each other.

Since the road of gears can't go through, North America's Pratt & Whitney and GM chose the road of the mediocre twin-rotor, the French Snecma chose to do subtraction, and directly played the single rotor to hang behind, and the British Rolloe chose to do addition, and the direct development of the three-rotor almost killed himself because of the high difficulty.

After the new century, there is a common industry saying in gear design, the modulus of the gear is not selected, but calculated according to the transmission moment.

In the 90s, due to the lack of processing and computing power, the gear transmission was fixed into a series of modules in most cases, and the versatility was improved by simplifying it at the expense of performance.

The French have always attached great importance to the introduction of the latest computer technology into the aviation industry, for example, Dassault Aircraft is the world's first aviation enterprise to use computers to design fighter jets, when the time entered the nineties, with the rapid progress of computer technology, the processing and computing power of the industry has gradually increased, Snecma wants to borrow high-performance computers to overcome the difficulties of non-mold gear design and processing, which is really in line with the French aviation industry has always been thinking.

When Liang Yuan figured out that the new technology of Snecmada multi-gear transmission recommended by Li Yuanling in the document was the clean power gear engine (GTF) that Pratt & Whitney would focus on investing in in the future, in addition to admiring the vision of his wife and the French, he had a headache for the financing amount of Tiankeng.

Li Yuanling wrote very clearly in the document that if the M123 Xinzhong pushes the gear transmission technology, the R&D budget of 1.2 billion US dollars can be made, and it is definitely worth burning incense and worshipping Buddha.

In other words, the R&D expenditure of 1.2 billion US dollars is just the foundation, and as for how much it is spent, it depends on whether God rewards it or not.

In order to avoid the arrogant mentality of Yuanjia executives due to Yuanjia's fierce singing in recent years, Li Yuanling did not shy away from showing the future difficulties and the strength of the opponent one by one.

Snecma is still self-aware, even with the use of radical gearing technology, the thrust of the M123 mid-thrust is not high, only 72KN, which is similar to the BR700 series developed by Rolls-Royce BMW.

Rolls-Royce used to replace RB183· Tay's next-generation mid-thrust BR700 series, with a starting thrust of 65KN, and a development thrust of about 100KN is at its limit.

Although the starting thrust of M123 with gear transmission is almost only 72KN with BR700, the development thrust is a bit scary, up to 125KN after iteration, Li Yuanling also specially added here, if M123 is blessed with Brilliance Power's current unique swept blade technology, the thrust of the final iteration product can exceed 150KN.

In the early days of the selection of CM airliners, when Snecma did not show enough sincerity, Liang Yuan always thought that Snecma did not break through the technical reserves of more than 100KN thrust, and Liang Yuan really did not expect that the French, who had a huge brain, could make a gear transmission This anti-heaven thing.

However, even if Snekma and Brilliance both come up with the technology of pressing the bottom of the box and adopt a radical technical route, they are still very naïve in front of the old power giants.

The GE-led, Snekma-assisted CFM series engines have been funded with a R&D fund of US$500 million in three years from project approval to first flight.

The BR700 series engine, led by Rolls-Royce and assisted by BMW, took three years from project approval to first flight, with a research and development fund of 550 million US dollars.

Led by Rolls-Royce and Pratt & Whitney, MTU and Japan Aviation Power Assistance, the international joint project V2500 is specially used to promote Kaizi, and the research and development funds are 1.4 billion US dollars in four years from project approval to the first flight.

The M123 project, led by Snecma and assisted by Brilliance, was approved this year and is expected to make its first flight in five years, with a research and development fund of at least $1.2 billion.

Snecma and Brilliance Power are desperate, and they have raised the thrust to the 150KN level, which is barely catching up with the CFM series that started with the 110KN thrust, as for the Ruida 700 series, GE90 series, P4000 series or something that is still in the cloud for the time being, it is not a luxury that can be hoped for on tiptoe.

At the end of the document, Li Yuanling still had the heart to ridicule his son, and said with a smile that if Liang Yuan's luck in throwing dice out of the oil field was still there, perhaps, it would not be impossible to get a billion dollars to get research and development.

Others don't know how the Nansha oil and gas field came about, Liang Yuan still has a bit of a B number in his heart, and if you think about it, you can never really prepare according to this budget.

Liang Yuan was lying on the table and lamenting, when two girls pushed the door and walked in.

"What's wrong with Xiaoyuan, is he not feeling well?"

Seeing someone's loveless face, Ning Wanjia directly threw away the documents in her hand, and touched Liang Yuan's forehead with her little hand in a little hurry.

"Jiajia, I'm not feeling unwell, but it's true that I'm sick. ”

"Believe that you are a fool, say what kind of disease, see if I can cure it. ”

After touching Liang Yuan's forehead, everything was normal, and she found that someone still had the energy to talk nonsense, and the girl knew that she had been fooled.

"People are poor, ugly faces, rural hukou, and I feel that there is no hope for the future at all. ”

Ning Wanjia was happy at first when she heard someone's nonsense, but when the girl's eyes swept over the desk and spread out the research and development expenses of at least $1.2 billion at the end of the document, her heart suddenly ached.

pursing her pink lips, Ning Wanjia stepped forward and leaned against Liang Yuan's side, stretched out her little hand and slowly hugged Liang Yuan's head, and slowly pulled it on her chest.

"Xiaoyuan has been tired lately. ”

After a few breaths, Ning Wanjia asked in a distressed whisper.

"Jiajia would be happy if she was tired like this all the time. ”

First surprised, and then someone who lost his IQ comfortably, and then answered sullenly.

~~~~~~~!!!

"Hey~~, don't pinch your ears, I'm going to a meeting, I'm so faceless. ”

Eventually, someone walked into the conference room on the top floor of the Peace Hotel with red ears.

"Go on, everybody, leave me alone, I'll listen for a while. ”

Liang Yuan casually found a place to sit down, and the two girls acted as assistants and secretaries as usual, and sat behind Liang Yuan respectively.

Looking at the red ears of the big boss and the crimson cheeks of the boss lady, the atmosphere in the conference room, which was originally a little dazed because of the meeting, suddenly sparked, and even the air was filled with a smile but not a smile.

Zhou Yuanhang, who was presiding over the meeting, knocked on the whiteboard with a marker, and said in a voice with a smile: "Let's continue." ”

"Everyone has read through the technical information of Mr. Li of Brilliance, and it is also the consensus of the conference to further deepen cooperation with Snecma, and now the main doubts are these two points~~~. ”

"The first is whether Snecma can treat us as equal partners, and we can't refer to the experience of the V2500 project of the International Engine Company. ”

As a top elite in the aviation field, Zhou Yuanhang can naturally judge the true position of Japan and the Federal Republic of Germany within the international engine companies.

Although the modern enterprise management system and commercial laws and regulations are very strict, no matter how strict the system is, it cannot stop the determination of human beings to exploit loopholes.

Although a lot of money has been spent, Japan and the Federal Republic of Germany have hardly learned anything meaningful from the V2500 project, let alone the large bypass project, even if it is the design and manufacture of small aero engines, these two countries are still playing a difficult role after 20 years.

Brilliance cooperates with Snekma, vigilance is a must, if the mistakes of Japan and the Federal Republic of Germany are repeated, the six hundred million dollars or more will not be worth the money.

"Second, even if we work together with Snekma, the probability of overcoming the difficulties of gear transmission technology within five years is not optimistic, gear technology and bearing technology are closely linked, and it is very doubtful whether the French SNR bearing can take on this research and development task. ”

Speaking of the modern aviation industry, the bearing manufacturer behind the Rolls-Royce BMW BR700 project is the German Schaefer (FAG) bearing, one of the world's four major bearings.

The bearing manufacturer behind the V2500 project of the International Engine Company is Seiko (NSK) bearing, one of the four major bearings in the world.

The bearing manufacturer behind the CFM56 project is still one of the world's four largest bearings, the American Timken bearing.

Who is the bearing manufacturer behind the M123 project? French SNR bearing, the international second-line bearing manufacturer, as for the Republic of Harbin axis, ZW, Luo axis not to mention.

The important role of bearings for an aero engine cannot be overemphasized, and the accidental broken blade engine does not necessarily fail, if the broken shaft engine is definitely finished.

In 1990, gear transmission was definitely the most cutting-edge project in the field of aviation and metals, and it was really uncertain whether the French SNR could carry the banner.

Of course, if it is outsourced to the other three major bearing manufacturers, it may be safe, but for France and the Republic, it may lose the core significance of taking a huge risk to develop a new push.

Whether it is Snecma or Brilliance, the reason why they are under huge pressure to get together for research and development is that the most fundamental plan is to start a new supply chain outside the existing power pattern.